[go: up one dir, main page]

GB1495173A - Tv receiver equipped for simultaneously showing several programmes - Google Patents

Tv receiver equipped for simultaneously showing several programmes

Info

Publication number
GB1495173A
GB1495173A GB9382/75A GB938275A GB1495173A GB 1495173 A GB1495173 A GB 1495173A GB 9382/75 A GB9382/75 A GB 9382/75A GB 938275 A GB938275 A GB 938275A GB 1495173 A GB1495173 A GB 1495173A
Authority
GB
United Kingdom
Prior art keywords
stored
line
picture
programme
lines
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB9382/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB1495173A publication Critical patent/GB1495173A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Studio Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

1495173 Television ITT INDUSTRIES Inc 6 March 1975 [22 March 1974] 9382/75 Heading H4F During reception of a first broadcast programme via RF, IF, and video stages 3-5, the RF stage 3 of a television receiver is switched to sample lines of a second broadcast programme for storage at 11, subsequent fast read out of the stored signals enabling a reduced scale version of the picture content of the second programme to be inlaid at a selected position in the main picture on screen 2. Pulses fed to the device 11 from a horizontal deflection circuit 7 determine the sampling periods during which the stage 3 is switched, the gain of stage 4 is altered, and the second programme is stored. They also control the readout of the stored signals to stage 5 and the simultaneous blanking of the first programme signal. Storage at 11 may be in a bucket brigade circuit or a charge coupled device in which stored lines are moved from line to line by parallel or serial transfer. The first and second programme will not generally be synchronous and means are provided at 11 for rotating each stored line until the line sync pulse occurs at the end thereof, and for controlling the storage position of each line according to the detection of the vertical sync pulse. A limited number of lines only may be stored during each frame scan, so that complete renewal of the stored picture may take several scans. The lines missing in the main picture may be replaced by (a) an average grey value in a black and white receiver; (b) colour information from the preceding line, e.g. from a PAL delay line; (c) colour information as (b) together with luminance information from the previous line via an additional delay line. The inlaid picture typically contains 50 lines each with 50 element resolution. The same stored picture may be shown in each field of an interlaced main picture, and may take the form of a still picture. Further inlaid pictures from other programmes may be provided similarly.
GB9382/75A 1974-03-22 1975-03-06 Tv receiver equipped for simultaneously showing several programmes Expired GB1495173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2413839A DE2413839C3 (en) 1974-03-22 1974-03-22 Television receiver with a device for the simultaneous playback of several programs

Publications (1)

Publication Number Publication Date
GB1495173A true GB1495173A (en) 1977-12-14

Family

ID=5910849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9382/75A Expired GB1495173A (en) 1974-03-22 1975-03-06 Tv receiver equipped for simultaneously showing several programmes

Country Status (6)

Country Link
JP (1) JPS50130322A (en)
DE (1) DE2413839C3 (en)
FR (1) FR2265235B1 (en)
GB (1) GB1495173A (en)
IT (1) IT1034314B (en)
ZA (1) ZA751469B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856334A1 (en) * 1977-12-29 1979-08-30 Matsushita Electric Ind Co Ltd TELEVISION RECEIVER
DE2937133A1 (en) * 1978-09-14 1980-04-03 Hitachi Ltd PICTURE-IN-PICTURE TELEVISION RECEIVER
GB2151100A (en) * 1983-11-29 1985-07-10 Yokogawa Medical Syst Composite image display system for computerized tomographs and other image data
GB2174266A (en) * 1985-04-15 1986-10-29 Philips Nv Television system and data generator and receiver suitable therefor
US4636864A (en) * 1982-08-23 1987-01-13 U. S. Philips Corporation Television receiver comprising a circuit for sequentially tuning the receiver to different frequencies
GB2220543A (en) * 1988-06-14 1990-01-10 Samsung Electronics Co Ltd Multichannel television receiver
GB2232033A (en) * 1989-05-26 1990-11-28 Samsung Electronics Co Ltd Synchronising video signals
US7475181B2 (en) 1993-02-10 2009-01-06 Mondis Technology Ltd. Display unit with processor and communication controller which communicates information to the processor

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134128A (en) * 1976-03-19 1979-01-09 Rca Corporation Television picture size altering apparatus
DE2614199C3 (en) * 1976-04-02 1982-05-27 Saba Gmbh, 7730 Villingen-Schwenningen Television receiver with a circuit arrangement for the simultaneous playback of several programs
DE2628737C3 (en) * 1976-06-25 1980-06-26 Deutsche Itt Industries Gmbh, 7800 Freiburg Television receiver with a device for the simultaneous playback of several programs
DE2649445C2 (en) * 1976-10-29 1982-09-09 Deutsche Itt Industries Gmbh, 7800 Freiburg Television receiver with a built-in timer
GB1576461A (en) * 1977-02-01 1980-10-08 Quantel Ltd Control arrangement for video synchronisers
AT347511B (en) * 1977-02-22 1978-12-27 Philips Nv CIRCUIT ARRANGEMENT FOR DIGITAL CORRECTION OF TIME BASE ERRORS OF A TELEVISION SIGNAL
DE2725364C3 (en) * 1977-06-04 1983-12-22 Robert Bosch Gmbh, 7000 Stuttgart Process for the simultaneous visual display of several different individual images
US4200890A (en) * 1977-07-11 1980-04-29 Nippon Electric Company, Ltd. Digital video effects system employing a chroma-key tracking technique
JPS6011875B2 (en) * 1977-08-17 1985-03-28 日本電気株式会社 Chroma key tracking device
JPS5819191B2 (en) * 1977-10-06 1983-04-16 シャープ株式会社 Television receiver channel selection device
JPS5819190B2 (en) * 1977-10-06 1983-04-16 シャープ株式会社 Television receiver channel selection device
JPS5492015A (en) * 1977-12-29 1979-07-20 Matsushita Electric Ind Co Ltd Color television image receiving unit
JPS6221381A (en) * 1985-07-19 1987-01-29 Matsushita Electric Ind Co Ltd Two screen television receiver
DE3582330D1 (en) * 1985-10-10 1991-05-02 Itt Ind Gmbh Deutsche TELEVISION RECEIVER WITH MULTIPLE IMAGE PLAYBACK.
ATE108967T1 (en) * 1989-10-06 1994-08-15 Dangschat Rainer Dipl Ing Fh CIRCUIT ARRANGEMENT FOR PICTURE-IN-PICTURE IN A TELEVISION SET WITH ONLY ONE TUNER.
DE59010281D1 (en) * 1990-08-23 1996-05-15 Siemens Ag Process for picture-in-picture overlay and device for carrying out the process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6160626B2 (en) * 1973-11-06 1986-12-22 Sony Corp

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856334A1 (en) * 1977-12-29 1979-08-30 Matsushita Electric Ind Co Ltd TELEVISION RECEIVER
DE2937133A1 (en) * 1978-09-14 1980-04-03 Hitachi Ltd PICTURE-IN-PICTURE TELEVISION RECEIVER
US4636864A (en) * 1982-08-23 1987-01-13 U. S. Philips Corporation Television receiver comprising a circuit for sequentially tuning the receiver to different frequencies
GB2151100A (en) * 1983-11-29 1985-07-10 Yokogawa Medical Syst Composite image display system for computerized tomographs and other image data
GB2174266A (en) * 1985-04-15 1986-10-29 Philips Nv Television system and data generator and receiver suitable therefor
GB2174266B (en) * 1985-04-15 1989-06-21 Philips Nv Television system and data generator and receiver suitable therefor
GB2220543A (en) * 1988-06-14 1990-01-10 Samsung Electronics Co Ltd Multichannel television receiver
GB2220543B (en) * 1988-06-14 1992-12-16 Samsung Electronics Co Ltd Multichannel television system
GB2232033A (en) * 1989-05-26 1990-11-28 Samsung Electronics Co Ltd Synchronising video signals
GB2232033B (en) * 1989-05-26 1994-03-16 Samsung Electronics Co Ltd Improvements in or relating to the syncronization of video signals
US7475181B2 (en) 1993-02-10 2009-01-06 Mondis Technology Ltd. Display unit with processor and communication controller which communicates information to the processor
US7475180B2 (en) 1993-02-10 2009-01-06 Mondis Technology Ltd. Display unit with communication controller and memory for storing identification number for identifying display unit

Also Published As

Publication number Publication date
FR2265235A1 (en) 1975-10-17
DE2413839A1 (en) 1975-09-25
FR2265235B1 (en) 1982-08-20
DE2413839C3 (en) 1979-10-31
IT1034314B (en) 1979-09-10
ZA751469B (en) 1976-02-25
JPS50130322A (en) 1975-10-15
DE2413839B2 (en) 1979-03-22
AU7925175A (en) 1976-09-23

Similar Documents

Publication Publication Date Title
GB1495173A (en) Tv receiver equipped for simultaneously showing several programmes
US4364090A (en) Method for a compatible increase in resolution in television systems
KR960010486B1 (en) Apparatus for defining an effective picture area of a high definition video signal when displayed on a screen with a different aspect ratio
CA1173954A (en) Television receiver including a circuit for doubling line scanning frequency
EP0660601B1 (en) Video processing circuit for a simultaneous display of two pictures
US4451848A (en) Television receiver including a circuit for doubling line scanning frequency
US4622577A (en) Decoder for extracting a 4:3 aspect ratio signal from a high definition television signal
JPH0783466B2 (en) Progressive scan display
CA2042778A1 (en) "channel guide" automatically activated by the absence of program information
CA2010688A1 (en) Fast response picture-in-picture circuitry
CA2018880A1 (en) Scanning line number converting device for video signal, and down-converter and picture-in-picture tv receiver using the same
CA1271254A (en) Television receiver
CA1214866A (en) Progressive scan television receiver with adaptive memory addressing
US5680176A (en) Apparatus for controlling caption display on a wide aspect ratio
GB1251008A (en)
EP0163514B1 (en) Progressive scan television apparatus for non-standard signals
US4722007A (en) TV receiver having zoom processing apparatus
KR940003050B1 (en) Television receiver responsive to plural video signals
US6307597B1 (en) Apparatus for sampling and displaying an auxiliary image with a main image
US3812522A (en) Color still picture projecting apparatus
US3440341A (en) Two-color display from line sequential color recording
US3097260A (en) Correction of transmission variations in television standards converting system
KR19990087474A (en) Device for sampling and displaying auxiliary video along with main video
US3710014A (en) Color television system
JP2823234B2 (en) Screen display device

Legal Events

Date Code Title Description
PS Patent sealed